If someone in the Marvel Zombies universe (from the TV show) built the Amazo android (so it doesn't have the powers of any DC heroes), how many Amazos would it take to wipe the planet clean of all zombies?

Alternatively, if you think it would only take one, how long would it take for that one Amazo to wipe out the zombie virus?

Which do you think would be better for a combined Marvel/DC universe, for Aquaman to be Namor's son, or for Namor and Aquaman to be the rulers of two separate and distinct underwater nations?